CBSE Class 8 Science Chapter 6 Revision Notes

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CBSE Class 8 Science Chapter 6 Combustion and Flame Revision Notes

 

CBSE Class 8 Science Chapter 6 Combustion and Flame Revision Notes are by far the best and most reliable Revision Notes for Combustion and Flame. These CBSE Class 8 Science Chapter 6 Combustion and Flame Revision Notes provided here are prepared by our subject experts at Swiflearn to help students to recall important concepts and points related to Chapter 6 Combustion and Flame of CBSE Class 8 and in turn, enhance their confidence.

CBSE Class 8 Science Chapter 6 Combustion and Flame Revision Notes will surely make your learning convenient & fun. Students can download CBSE Class 8 Maths Chapter 6 Combustion and Flame Revision Notes in PDF format, use them to retain their previously learned concepts, and hence, ensure better examination results for themselves.

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Combustion

When a substance burns in air to give out heat it is called combustion. If it is accompanied by flame it is called burning. A large flame along with heat, light, and smoke constitutes a fire.

 

Types of combustion

 

Complete combustion:

When the combustion takes place in the presence of abundant oxygen such that the combustible substance combines with oxygen to their maximum extent. These reactions have heat and light as visible by-products.

 

Incomplete Combustion:

When the combustion takes place in the absence of oxygen such that the substance is unable to burn completely. These reactions leave soot in the container due to the formation of carbon monoxide as a by-product.

 

Flame

A flame is formed by a substance that evaporates on burning. The substance which does not vaporize during burning does not produce the flame. That is why a candle produces a flame while charcoal does not.

 

Types of flames

 

 

Luminous flame:

The Luminous flame burns yellow; this is because luminous flames have limited access to oxygen. Example:- Candle, kerosene lantern.

 

Non Luminous flame:

The non-luminous flame burns blue, this is because non-luminous flames have unlimited access to oxygen. Example:- kerosene stove, gas stove.

 

CBSE Class 8 Science Chapter 6 Combustion and Flame Revision Notes PDF

 

Combustion And Flame

 

 

 

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